Winding apparatus for the fall of ships&#39; life boats



Nov, 10, 1931. A A. P. SCHAT 1,830,890

WINDING APPARATUS FOR THE FALL OF SHIPS LIFE BOATS Filed Dec. '7. 1929 2 Sheets-Sheet l //V VEN 70/? Ana P/efer Sc/mf A ro'r/k Nov. 10,1931.

A. P. SCHAT 1,830,890

WINDING APPARATUS FORT HE- FALLOF SHIPS LIFE BOATS Filed Dec. 7. 1929 2 Sheets-Sheet 2 Ana Pl fer Sc/mf y e A f fbk 'ney Patented Nov. 10, 1931 UNITE'DVISTAVTES PAT T oFFl'caj p v AN'E PIETERSCHAT, or urnnonir, nETnnRLAnns. Q

WINDING arrnnnrus Eon THE FALL r stairs nrrn'iaoa'rs Application filed December 7,1929, Serial No. 412, 44, ai1-d in the Netherlands September as, 1923.

The fall ofa lifeboat isordinarily wound on a drum mounted for rotation in brackets;

secured to deck. When the fall is being paid out, the same is passed' over' a bollard or a g cleat, whereby the tension intthe hauling part is reduced to such'an extent that saidpart can be held jby hand. Said drum only serves the purpose to prevent the fall from fouling, because the resistance required to keep the speed of the descending boatrrithin suitable limits is entirely supplied by the bollard or cleat, and by the CI6\V. I

The object of my present invention is a winding apparatus of the above type, provided with a special brakemechanism by means of'which the hauling part of the fall can be held against the gravity pull of the boat, without the fall being passed over a bollard or'cleat. The novel construction meets the condition, fundamental on board ships, that the gear .maynot require any supervision-as r otherwise it might fail to properly operate in the crucial moment-andi that its appearance may not appreciably differ from that of'the conventional winding drums, as otherwise. the apparatus might ex-- cite the sailors well-known aversion against mechanical appliances.

In order that my invention 3;; understood, I shall now proceed to describe the same with reference to the annexed drawings, Figs. 1, 2 and 31 of which illustrate sectional elevations of three different e1nbodi-'* ments thereof and in which equivalent parts are designated by the same reference'numeri als throughout.

In Fig. 1, theapparatus comprises a wooden roller 1, to the end faces of which are secured, by means'of countersunk screws 5; through the medium of cast iron flanged That portion of the shaft wliichproj'ects from the side plate 4 is'squarethrough partof its length, said square'having a'sliding'fi t within a square aperture in the hub portion of a-brake disk 8 which, in turn,has a" sliding may be fully 2, sheet iron side plates 3 and 4, respectively. This system is freely revoluble about a shaft of shaft'5 is gas" screw threaded to receive a.

stem nut 10 and a lock nutll. The left hand side end of shaft 5, which is provided with screw thread having a relatively steep pitch to'receiv'e the threaded hub. ofv a. handlever 14, is supported within the 1 hub portion of a second brake disk 12 having a square slidably fittingwithin a square aperture of'a second bracket 13. By'means-of the stem nut 10, the described. apparatus is adjusted. so'that, when lever 14 assumes asubstantiallyvertical position, one quarter of a turn thereof sufiicesto pull shaft 5-Which, as will be understood from the above description, is'preventedfrom rotation-to the left to an extent as to cause the brakeidisks 8, 1 2 to firmlyclamp the roller 1. withits side platesand thus to p1-eventtlie 'fallfrom beingipaid out. In this connection often'pla'ced close to the railing at a minimum 5 distance from the life boat.- Moreover, care should be taken that the brake handle of said apparatus under all conditions clears the cranksby means of which the dflVlltSaIQi/O be'handled, and as said apparatus .inust be mounted in close proximity of a d'avi-t it will be understood that adjustability of thebrak ing position of said handle of great importance; '1

D.uring"thewbraking action, "the. wooden roller. 1;is'under axial strain of pressure, whereasshaft 5 is under axial strain of tension,-i. e. both parts are loaded in themost favourable manner. The construction of the device is of the utmost simplicity and the operation is so easy that even unskilled persons cannot make amistake. With the med the described apparatus it is not absolutely necessary to pass the hauling part of the fall over a bollard or cleat,"althoughthis may and in most cases will be done.- In emergency cases the boat can be held poised exclusively by means of the brake disks 8, 12 which, when forcibly pressed towards one another by means ofthe lever 14,,100

counteract any tendency of the roller 1 to rotate.

Fig. 2 shows an apparatus in which the wooden roller 1 is rotatably mounted on shaft 5 and the brake disks 8, 12 are slidably but non-rotatably supported by the brackets 9, 13, in exactly the same manner as illustrated in Fig. 1. In this instance, however, the shaft 5 engages the brake disks 8, 12 through right and left hand screw threads 15, 16 and is provided on both ends with a hexagon to receive in a suitable angular position the hand lever 14, the hub portion of which has an aperture of corresponding shape. Thus,

rotation of the shaft 5 by means of the lever in the one or in the other direction results in an axial movement of the brake disks towards or away from one another, whereby the roller 1 is braked or released, respectively. 'Also with this apparatus the parts should be so adjusted that, when lever 14 is substantially vertical, one quarter of aturn thereof will cause the roller to be firmly held against rotation. l

The device illustrated in Fig. 3 differs from those according to Figs. 1 and 2 in that the system comprising the wooden roller 1, the iron side plates 3, 4 and associate parts is secured to shaft 5 by means of a key 17 and that the shaft is freely revoluble within bearings 1 lefthand side face against a gun metal ring 19 locked by a collar 20against displacement to the left. 7 4

The projecting right hand side portion of shaft 5 carries a nut 21 serving as an abutment for a gun metal ring 22 engaging the right hand side end face of brake disk 8,'said nut being prevented from rotation on shaft 5 by a lock nut 23 of said shaft.

Also with the construction shown in Fig. 3, angular motion of lever 14 results in axial movement of the brake disks towards or away from another so as to brake or release the roller 1, but this gear has the advantage that the roller can be turned by means of a crank to be placed on the square 24, whereby the empty fall after the launching of. the'boat, can be wound on the roller quicker than it can be done with the apparatus shown in Figs. 1 and 2. a 7

As a matter of course, the hand lever 14 in all embodiments could be replaced by its equivalent, such as a'hand wheel.

What I claim is H 1. Winding apparatus forthe fall ofa ships life boat, comprising two vertical fixed brackets, a horizontal shaft supported by said brackets by the intermediary of a pair 1' of brake discs slidably but non-rotatably passed on the square end 24:

mounted in said brackets, a reel mounted on said shaft between said brake discs in adj ustable frictional engagement with the active surfaces thereof, a braking handle mounted on one end of said shaft for actuating said discs and means mounted on the opposite end of said shaft for adjusting the braking position of said handle.

2. lVinding apparatus for the fall of a ships lifeboat, comprising two vertical fixed brackets, a horizontal shaft provided with screw thread at both ends and supported by said brackets by the intermediary of a pair of brake discs slidably. but non-rotatably mounted insaid brackets, a reel consisting of two. .bearings mounted for free rotation on said shaft, of a wooden drum and of two iron side plates secured to the faces of said bearings and of said drum respectively, said plates beingin adjustable frictional engagement with the active surfaces of said brake.

discs, a braking handle screwable on the one threaded end of said shaft for actuating said discs and a stem and lock-nut device acting on the opposite threaded end of said shaft for adjusting the braking position of said handle. 7

3. Winding apparatus for the fall of a ships life boat, comprising two vertical fixed brackets, a horizontal shaft supported by said brackets by the intermediary of a pair of brake discs slidably but non rotatably mountedin said brackets, a reel consisting of two bearings mounted for free rotation on said shaft, of a wooden drum and of two iron side plates secured to the faces of said bearings and of said drum respectively, said plates being in adjustable frictional engagement with the active surfaces of said brake discs, a braking handle secured at one end of said shaft for actuating said discs, a right and left hand screw connection between said shaft and said discs insuch a manner that angular movement of said handle results in axial movement of said discs toward or away from one another and a nut screwable on the opposite end of said shaft so as to press more or less onrthe brake disc remote from the handleand thus adjust the braking position of said latter. 7 1

4. Winding apparatus for the fall of a ships life boat comprising two vertical fixed brackets, a horizontal shaft supported by said brackets by the'intermediary of a pair of brake discs slidably but non-rotatably mounted in said brackets, a reel consisting of two bearings keyed on saidshaft, of a wooden drum and of two iron side plates secured to the faces of-said bearings and of said drum respectively, said plates being in adjustable connection between said handle and the adjacent brake disc in such a manner that angular movement of said handle results in axial movement of said discs toward or away from one another, a nut screwable on the opposite end of said shaft so as to press more or less on the brake disc remote from the handle and thus adjust the braking position of said latter and locking means for securing said nut in its setting position. a In testimony whereof I aflix my signature. ANE PIETER SCHAT. 

